Histomorphometric analysis of heterotopic bone formed by stromal- osteogenic subpopulations

D. Benayahu*, J. Sela

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


MBA-15.4 and MBA-15.6 cell lines are marrow stromal clonal subpopulations and represent various stages of differentiation of the osteoblastic family. These cells vary in terms of morphology, proliferation rate, synthesis of matrix proteins as collagen and noncollagenous proteins, and by their responses to hormones and growth factors. Their differential properties directly reflect the clonal cells' ability to form bone in vivo. When the cells were transplanted at an ectopic site, under the kidney capsule, MBA-15.4 line formed small loci of bone whereas MBA-15.6 cell line formed massive woven bone during the same period of time. In this study, we focused on the histomorphometric analysis of ectopic ossicles formed by the clonal cell lines. Assessments of bone mass changes involved measurements of cellular components, osteoid, and formation of primary bone. The bony tissue formed was condensed, no hemopoiesis was noted, and the ossicle was not remodeled. The histology studies were used for quantitative analysis of the ossicle formation and describe the dynamics of ossicles formed by the individual cell types.

Original languageEnglish
Pages (from-to)254-258
Number of pages5
JournalCalcified Tissue International
Issue number4
StatePublished - Oct 1996


  • Cell differentiation
  • Ectopic bone formation
  • Histomorphometry
  • Marrow osteoblasts


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